Among online communities, YouTube comment threads are definitely different than most because people are talking about a shared experience that you can share alo

Among online communities, YouTube comment threads are definitely different than most because people are talking about a shared experience that you can share along with them. A mini-game element to a social network would have the same effect. I don't think social networks built around quest games would be as relevant, as they would be biased in favor of intense players and that would be offputting to casual players. It would also be harder to understand what was being talked about.